The Vornado AVH2 Heater was featured on treehugger.com as one of the top three gadgets that can actually save you money! Vornado heaters use vortex action technology to fully circulate the warm air throughout the room. This is unlike most space heaters that heat the space directly in front of the unit with the heat immediately rising to the ceiling. The AVH2 uses automatic climate control which adjusts the heat output and fan speed higher or lower at all times to maintain the set temperature. This eliminates annoying hot and cold cycles where the heater shuts off allowing the room to cool and then turns back on to heat the room up again. This household heater is whisper-quiet and has advanced safety features to provide worry-free use.